Masan climate — normals and trends
Masan (South Korea) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 13.0 °C and it receives 1,258 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is August (25.9 °C on average) and the coldest is January (-0.1 °C). Rainfall peaks in July.
Masan averages 89 frost days, 32 hot days (≥ 30 °C) and 111 rainy days per year.
Masan has warmed by +1.9 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.
The number of frost days there went from about 101 to 77 per year over the period.
The hottest day of the period reached 38.1 °C (on 18 July 1994) and the coldest -18.8 °C (on 8 January 2021).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
MasanGwangju
- coords
- 35.13°, 126.83°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
13.0°C
Average daily high
17.8°C
Average daily low
8.8°C
Annual rainfall
1,258mm
Sunshine / day
8.6h
Mean relative humidity
74%
Average peak wind
15.4km/h
Seasonal range
26.0°C
Frost days (< 0 °C)
89 d/yr
Hot days (≥ 30 °C)
32 d/yr
Rainy days (≥ 1 mm)
111 d/yr
Annual snowfall
18.9 cm
Average feels-like high
17.2 °C
Average feels-like low
7.4 °C
Average peak gust
36.2 km/h
Tropical nights (≥ 20 °C)
65 d/yr
Solar radiation
15.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.58 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
38.1 °C
18 July 1994
Coldest day
-18.8 °C
8 January 2021
Wettest day
209 mm
11 July 1972
Windiest day
58.2 km/h
28 August 2012
Strongest gust
153.7 km/h
28 August 2012
Hottest feels-like
43.8 °C
22 July 1994
Coldest feels-like
-23.6 °C
8 January 2021
Snowiest day
11.1 cm
11 February 1994
Sunniest day
13.9 h
29 June 1951
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 5.8 °C | +1.8 °C | 25 mm | -6 mm |
| Feb | 5.0 °C | -1.1 °C | 31 mm | -6 mm |
| Mar | 13.9 °C | +2.5 °C | 40 mm | -19 mm |
| Apr | 19.8 °C | +2.0 °C | 63 mm | -27 mm |
| May | 22.4 °C | -0.5 °C | 116 mm | +13 mm |
| Jun | 28.2 °C | +2.0 °C | 226 mm | +49 mm |
| Jul | 32.5 °C | +3.7 °C | 208 mm | -64 mm |
| Aug | 31.4 °C | +1.5 °C | 230 mm | +34 mm |
| Sep | 27.9 °C | +2.1 °C | 187 mm | +32 mm |
| Oct | 22.4 °C | +2.1 °C | 148 mm | +95 mm |
| Nov | 15.4 °C | +1.8 °C | 17 mm | -35 mm |
| Dec | 8.8 °C | +2.0 °C | 30 mm | -2 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Masan?
Masan has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 13.0 °C and it receives 1,258 mm of precipitation per year.
What is the hottest day ever recorded in Masan?
The hottest day measured in Masan between 1940 and 2025 was 18 July 1994, reaching 38.1 °C.
What is the coldest day in Masan?
The coldest day measured in Masan between 1940 and 2025 was 8 January 2021, at -18.8 °C.
Does it snow in Masan?
Yes. Masan gets on average 18.9 cm of snow per year and has around 89 frost days.
Has the climate of Masan warmed?
Yes: Masan warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Masan?
The wettest day measured in Masan between 1940 and 2025 was 11 July 1972, with 209 mm of rain in 24 hours.
What was the windiest day in Masan?
The windiest day measured in Masan between 1940 and 2025 was 28 August 2012, with winds reaching 58.2 km/h.
What is the warmest month in Masan?
The warmest month in Masan is August (25.9 °C on average); the coldest is January (-0.1 °C).
How much does it rain in Masan?
Masan receives on average 1,258 mm of precipitation per year, spread over about 111 rainy days.
Is it sunny in Masan?
Masan gets on average 8.6 hours of sunshine per day, roughly 3,139 hours per year over 1940-2025.
What is the biggest single-day snowfall in Masan?
The heaviest 24-hour snowfall measured in Masan between 1940 and 2025 was 11 February 1994, with 11.1 cm.
Are there tropical nights in Masan?
Yes: Masan has on average 65 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Masan?
In Masan, between 1940 and 2025, the highest apparent temperature reached 43.8 °C on 22 July 1994, and the lowest was -23.6 °C on 8 January 2021.
Compare Masan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Masan